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Finding the Fourth Proportional to 683.79, 937.52 and 671.46

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Solution

The fourth proportional to 683.79, 937.52 and 671.46 is: 920.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.79 : 937.52 = 671.46 : x
  2. Step 2: Convert to fraction form
    683.79/937.52 = 671.46/x
  3. Step 3: Cross multiply
    683.79x = 937.52 × 671.46
  4. Step 4: Simplify right side
    683.79x = 629,503.82
  5. Step 5: Solve for x
    x = 629,503.82/683.79
  6. Step 6: Final answer
    x = 920.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.